Home / 768,105.40-1,059,976.38-423,943.96

Finding the Fourth Proportional to 768,105.40, 1,059,976.38 and 423,943.96

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Solution

The fourth proportional to 768,105.40, 1,059,976.38 and 423,943.96 is: 585,037.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,105.40 : 1,059,976.38 = 423,943.96 : x
  2. Step 2: Convert to fraction form
    768,105.40/1,059,976.38 = 423,943.96/x
  3. Step 3: Cross multiply
    768,105.40x = 1,059,976.38 × 423,943.96
  4. Step 4: Simplify right side
    768,105.40x = 449,370,584,043.67
  5. Step 5: Solve for x
    x = 449,370,584,043.67/768,105.40
  6. Step 6: Final answer
    x = 585,037.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.